Hp 50g Graphing Calculator Manual de usuario descargar pdf (Pagina 350)

100

101

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can be written as the matrix equation A⋅x = b, if

This system has more equations than unknowns (an over-determined system).

The system does not have a single solution. Each of the linear equations in

the system presented above represents a straight line in a two-dimensional

Cartesian coordinate system (x

, x

). Unless two of the three equations in the

system represent the same equation, the three lines will have more than one

intersection points. For that reason, the solution is not unique. Some numerical

algorithms can be used to force a solution to the system by minimizing the

distance from the presumptive solution point to each of the lines in the system.

Such is the approach followed by the calculator numerical solver.

Let’s use the numerical solver to attempt a solution to this system of equations:

‚Ï ˜˜˜ @@OK@@ . Enter matrix A and vector b as illustrated in the

previous example, and press @SOLVE when the X: field is highlighted:

To see the details of the solution vector, if needed, press the @EDIT! button. This

will activate the Matrix Writer. Within this environment, use the right- and left-

arrow keys to move about the vector:

⎥

⎦

⎤

⎢

⎣

⎡

⎥

⎦

⎤

⎢

⎣

⎡

⎥

⎦

⎤

⎢

⎣

⎡

−

−= bxA and

1 2 ... 345 346 347 348 349 350 351 352 353 354 355 ... 886 887

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Hp 50g Graphing Calculator Manual de usuario Pagina 350

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